o_time.c

/* crypto/o_time.c -*- mode:C; c-file-style: "eay" -*- *//* Written by Richard Levitte (richard@levitte.org) for the OpenSSL * project 2001. *//* ==================================================================== * Copyright (c) 2001 The OpenSSL Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" * * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to * endorse or promote products derived from this software without * prior written permission. For written permission, please contact * licensing@OpenSSL.org. * * 5. Products derived from this software may not be called "OpenSSL" * nor may "OpenSSL" appear in their names without prior written * permission of the OpenSSL Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" * * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * This product includes cryptographic software written by Eric Young * (eay@cryptsoft.com). This product includes software written by Tim * Hudson (tjh@cryptsoft.com). * */#include <openssl/e_os2.h>#include <string.h>#include "o_time.h"#ifdef OPENSSL_SYS_VMS# include <libdtdef.h># include <lib$routines.h># include <lnmdef.h># include <starlet.h># include <descrip.h># include <stdlib.h>#endifstruct tm *OPENSSL_gmtime(const time_t *timer, struct tm *result)
{
struct tm *ts = NULL;
#if defined(OPENSSL_THREADS) && !defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_SYS_OS2) && !defined(__CYGWIN32__) && (!defined(OPENSSL_SYS_VMS) || defined(gmtime_r)) && !defined(OPENSSL_SYS_MACOSX) && !defined(OPENSSL_SYS_SUNOS)/* should return &data, but doesn't on some systems, so we don't even look at the return value */
gmtime_r(timer,result);
ts = result;
#elif !defined(OPENSSL_SYS_VMS) ts = gmtime(timer);
if (ts == NULL)
return NULL;
memcpy(result, ts, sizeof(struct tm));
ts = result;
#endif#ifdef OPENSSL_SYS_VMSif (ts == NULL)
{
static $DESCRIPTOR(tabnam,"LNM$DCL_LOGICAL");
static $DESCRIPTOR(lognam,"SYS$TIMEZONE_DIFFERENTIAL");
char logvalue[256];
unsignedint reslen = 0;
struct {
short buflen;
short code;
void *bufaddr;
unsignedint *reslen;
} itemlist[] = {
{ 0, LNM$_STRING, 0, 0 },
{ 0, 0, 0, 0 },
};
int status;
time_t t;
/* Get the value for SYS$TIMEZONE_DIFFERENTIAL */
itemlist[0].buflen = sizeof(logvalue);
itemlist[0].bufaddr = logvalue;
itemlist[0].reslen = &reslen;
status = sys$trnlnm(0, &tabnam, &lognam, 0, itemlist);
if (!(status & 1))
return NULL;
logvalue[reslen] = '\0';
t = *timer;
/* The following is extracted from the DEC C header time.h *//*** Beginning in OpenVMS Version 7.0 mktime, time, ctime, strftime** have two implementations. One implementation is provided** for compatibility and deals with time in terms of local time,** the other __utc_* deals with time in terms of UTC.*//* We use the same conditions as in said time.h to check if we should assume that t contains local time (and should therefore be adjusted) or UTC (and should therefore be left untouched). */#if __CRTL_VER < 70000000 || defined _VMS_V6_SOURCE/* Get the numerical value of the equivalence string */
status = atoi(logvalue);
/* and use it to move time to GMT */
t -= status;
#endif/* then convert the result to the time structure *//* Since there was no gmtime_r() to do this stuff for us, we have to do it the hard way. */
{
/* The VMS epoch is the astronomical Smithsonian date, if I remember correctly, which is November 17, 1858. Furthermore, time is measure in thenths of microseconds and stored in quadwords (64 bit integers). unix_epoch below is January 1st 1970 expressed as a VMS time. The following code was used to get this number: #include <stdio.h> #include <stdlib.h> #include <lib$routines.h> #include <starlet.h> main() { unsigned long systime[2]; unsigned short epoch_values[7] = { 1970, 1, 1, 0, 0, 0, 0 }; lib$cvt_vectim(epoch_values, systime); printf("%u %u", systime[0], systime[1]); } */unsignedlong unix_epoch[2] = { 1273708544, 8164711 };
unsignedlong deltatime[2];
unsignedlong systime[2];
struct vms_vectime
{
short year, month, day, hour, minute, second,
centi_second;
} time_values;
long operation;
/* Turn the number of seconds since January 1st 1970 to an internal delta time. Note that lib$cvt_to_internal_time() will assume that t is signed, and will therefore break on 32-bit systems some time in 2038. */
operation = LIB$K_DELTA_SECONDS;
status = lib$cvt_to_internal_time(&operation,
&t, deltatime);
/* Add the delta time with the Unix epoch and we have the current UTC time in internal format */
status = lib$add_times(unix_epoch, deltatime, systime);
/* Turn the internal time into a time vector */
status = sys$numtim(&time_values, systime);
/* Fill in the struct tm with the result */
result->tm_sec = time_values.second;
result->tm_min = time_values.minute;
result->tm_hour = time_values.hour;
result->tm_mday = time_values.day;
result->tm_mon = time_values.month - 1;
result->tm_year = time_values.year - 1900;
operation = LIB$K_DAY_OF_WEEK;
status = lib$cvt_from_internal_time(&operation,
&result->tm_wday, systime);
result->tm_wday %= 7;
operation = LIB$K_DAY_OF_YEAR;
status = lib$cvt_from_internal_time(&operation,
&result->tm_yday, systime);
result->tm_yday--;
result->tm_isdst = 0; /* There's no way to know... */
ts = result;
}
}
#endifreturn ts;
}